What is the solution of the landlady?

In Roald Dahl's short story "The Landlady," the solution revolves around the protagonist, Billy, who unwittingly becomes a victim of the landlady's sinister intentions. The story concludes ambiguously as Billy realizes something is off about the landlady and her strange, preserved pets, but it is too late. The solution highlights themes of naivety and the consequences of trusting appearances, leaving readers with an unsettling sense of dread. Ultimately, there is no clear resolution for Billy, as he becomes trapped in the landlady's bizarre world.